A simplified micro-modeling approach for Historical Stone Masonry Walls

G. Castellazzi, Daniela Ciancio, F. Ubertini

    Research output: Chapter in Book/Conference paperConference paper

    2 Citations (Scopus)

    Abstract

    © (2015) Trans Tech Publications. A recent study [2] has discussed the accuracy of the nodal elastic stresses of zero thickness interface elements when fictitious elastic parameters (often called penalty stiffness factors) are used. These stresses, commonly used to calculate the triggering conditions of the opening of the interface simulating a discrete crack in quasi-brittle materials, are affected by non-negligible errors if the interfaces are embedded in unstructured/irregular meshes. A procedure to avoid these errors has been proposed for homogeneous materials [2] and bi-material interfaces [3]. Accurate nodal stresses are recovered if certain geometry-dependent pre-processed coefficients are used. In this paper, the method is proposed in the analysis of Historical Stone Masonry Walls: zero-thickness interface elements represent the interaction between stones of irregular shape. The crack opening triggering conditions are calculated for two identical meshes with rigid continuous elements representing the stones and fictitiously elastic zero-thickness interfaces representing the mortar layers. This paper shows that the use of the proposed coefficients significantly changes the values of the interface stresses leading to different configurations of the cracking onset.
    Original languageEnglish
    Title of host publicationKey Engineering Materials
    Place of PublicationSwitzerland
    PublisherScientific.net
    Pages74-79
    Volume624
    ISBN (Print)9783038352037
    DOIs
    Publication statusPublished - 2015
    Event4th International Conference on Mechanics of Masonry Structures Strengthened with Composite Materials, MuRiCO 2014 - Italy, Ravenna, Italy
    Duration: 9 Sep 201411 Sep 2014
    Conference number: 109316

    Conference

    Conference4th International Conference on Mechanics of Masonry Structures Strengthened with Composite Materials, MuRiCO 2014
    Abbreviated titleMuRiCO
    CountryItaly
    CityRavenna
    Period9/09/1411/09/14

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  • Cite this

    Castellazzi, G., Ciancio, D., & Ubertini, F. (2015). A simplified micro-modeling approach for Historical Stone Masonry Walls. In Key Engineering Materials (Vol. 624, pp. 74-79). Scientific.net. https://doi.org/10.4028/www.scientific.net/KEM.624.74